Never experience this before, but the refill holes at the top of my battery are leaking and bubbling slowly once the car is used.

Q. Is this a knackered battery or an overcharging alternator.

It hasnt spilled onto bodywork, but clearly something is on the goose!

Any help mucho appreciated!

 

Hmm..maybe even overfilled?

 

Usually indicates a cell gone and a new battery is required. Eggy smell?

 

wrxmark is spot on - time to change it !

 

cheers guys!!

 

mines been doing this for last 3 years, think water is running through vent at night when battery is cool thus putting battery acid to full , then when battery gets hot and expands ,it overflows but only a few drips out of each cell , the battery is the type with flush caps so possible rain water runs down between threads
ssubaru